Giuliano Antoniol F. Calzolari L. Cristoforetti Roberto Fiutem Gianluigi Caldiera Adapting Function Points to Object-Oriented Information Systems. 59-76 http://link.springer.de/link/service/series/0558/bibs/1413/14130059.htm 1998 conf/caise/1998 CAiSE db/conf/caise/caise98.html#AntoniolCCFC98